These 9th grade spelling words are challenging for most adults, including teachers and parents! Your students will gain confidence in their writing when they learn to use and spell words like ubiquitous, idiosyncrasy, rococo and more.
If you're looking for even greater challenges, try our eBook of 100 Difficult Spelling Bee Words!
Download our Printable 9th Grade Spelling Words [PDF].
| absorption | accompaniment | accomplice |
| acquiesce | acquittal | affiliation |
| altercation | ambassador | ambiguous |
| animosity | apparatus | approximately |
| austerity | authentic | authenticate |
| auxiliary | benevolent | blasphemous |
| bravado | camouflage | capricious |
| carburetor | cavalcade | celestial |
| cerebral | chagrin | chaotic |
| chasm | chastise | chronic |
| citadel | clique | cocoon |
| conceivable | concurrent | conscientious |
| consciousness | contiguous | correspondence |
| corroborate | curriculum | defamation |
| deprivation | derelict | diffidence |
| disastrous | dissociate | distinction |
| diurnal | dominant | dormitory |
| drudgery | elicit | elimination |
| embroidery | equinox | escapade |
| espionage | etiquette | exaggeration |
| exemplary | expediency | expedient |
| expunge | facsimile | fallacy |
| feasibility | fictitious | finesse |
| fluorescent | fulfill | grammatically |
| gruesome | handkerchief | hideous |
| hindrance | homogenize | hypocrisy |
| idiosyncrasy | impasse | impropriety |
| incandescent | incessant | inconsolable |
| indelible | indispensable | indisputable |
| insufficient | interrogative | irreconcilable |
| irrelevant | irrevocable | judicious |
| justifiable | labyrinth | liaison |
| lustrous | magnanimous | magnificence |
| maintenance | malicious | martyr |
| melee | metamorphosis | molecular |
| monotony | morose | multiplicity |
| nausea | nonchalance | notoriety |
| oblique | occasionally | olfactory |
| omnipotent | onomatopoeia | palatable |
| pandemonium | panorama | partiality |
| pastime | patriarch | pediatrician |
| peril | perjury | philanthropist |
| picturesque | pittance | playwright |
| poignancy | poignant | potpourri |
| prejudice | premonition | primitive |
| proximity | quibble | quixotic |
| quizzical | recipient | redundant |
| reek | relevancy | remembrance |
| renegade | renovate | reservoir |
| respite | retaliate | retrieve |
| rococo | sabotage | salient |
| satisfactorily | saunter | scavenger |
| scourge | scuttle | seethe |
| significance | soliloquy | spasmodic |
| squalid | strenuous | stringent |
| subsequent | subsistence | succinct |
| summarize | supersede | surgeon |
| surveillance | swelter | synthesis |
| tantalize | technician | technique |
| tedious | tenuous | tirade |
| transcend | transient | transmutation |
| tremor | turbulence | ubiquitous |
| ulterior | unanimous | uncanny |
| uncouth | undoubtedly | unforgettable |
| upbraid | variegated | vengeance |
| versatile | volatile | vulnerable |
| vying | wary |
Please note that this is a general list to supplement other curriculum. The needs of your students may vary.
Use our list of 9th grade spelling words for classroom quizzes and competitions, games and worksheets. We have free spelling lessons that can help you learn or teach some of these tricky words.
Your 9th graders may also want to brush up on this list of 8th grade spelling words. There's plenty of tough ones on this list, too!

Here's a very helpful resource from Amazon. You don't have to know how to spell a word to look up its correct spelling. You only need to be able to pronounce it!
1001
Commonly Misspelled Words: What Your Spell Checker Won't Tell YouAmerican
English Dictionaries & Thesauruses)
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